Where does Hemlock Semiconductor Operations LLC rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hemlock Semiconductor Operations LLC ranks #28,962 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Hemlock Semiconductor Operations LLC hold?

Hemlock Semiconductor Operations LLC holds 9 US utility patents granted between 2018 and 2025, spanning 16 technology areas.

What is Hemlock Semiconductor Operations LLC's Innovation Score?

Hemlock Semiconductor Operations LLC has an Innovation Score of 30.0 out of 100 (33rd percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Hemlock Semiconductor Operations LLC's patent grant rate increasing or decreasing?

Hemlock Semiconductor Operations LLC's recent grant velocity is -86% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Hemlock Semiconductor Operations LLC's patents?

Hemlock Semiconductor Operations LLC's patents average 13.1 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Hemlock Semiconductor Operations LLC patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO 2015–2025 USPTO PatentsView US Corporation

Hemlock Semiconductor Operations LLC

Q: What technology areas does Hemlock Semiconductor Operations LLC focus on?

Hemlock Semiconductor Operations LLC's top technology area is C01B (Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c) with 5 patents, ranking #476 of 1,689 assignees active in that subclass. Grants appear in 16 CPC subclasses total.

USPTO PatentsView assignee record - 9 granted patents across 16 technology areas, recorded in grant years 2018–2025. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: C01B (Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hemlock ranks #28,962 of 49,997 tracked US assignees by granted-patent volume, with 9 patents across 16 technology areas.

#28,962
of 49,997 US assignees by volume: 33rd percentile
by Innovation Score (30.0/100): 13.1
avg claims per patent: -86%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R28962 · US Corporation #28,962 · 9 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 9 grants
MID-PACK #28,962/49,997
PHOTO-FINISH Heated Blades Holding
CPC-FOCUS C01B · 16 areas
INNOV-THIN 30.0/100
CLAIMS-RICH 13.1 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -86% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Heated Blades Holding Company, LLC (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Hemlock’s 30.0 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 8.0 pts (27%) Velocity 0.0 pts (0%) Breadth 14.1 pts (47%) Claim depth 7.9 pts (26%)

Qualcomm Incorporated · highest

85
Hemlock Semiconducto… · this assignee

30
3D Lighting… · lowest

7

What this shows Hemlock's Innovation Score is 30.0/100 (33rd percentile of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Hemlock?

Each dot is one of Hemlock’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Hemlock’s own 13.1 claims/patent is ABOVE the 8.8 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

Hemlock vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Hemlock's grants concentrate

Hemlock Semiconductor Operations LLC is a focused PatentsView assignee: 16 CPC subclasses with 55.6% of grants classified under C01B (Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c). Peak complete grant year is 2019 (4 grants) versus a trough of 1 in 2020. By volume, Hemlock sits between Heated Blades Holding Company, LLC and Heron Neutron Medical Corp..

Heated Blades Hol…

9
Hebei University…

9
Hedvig

9
Hefei CAS ION Med…

9
Hengdian Group In…

9
Hero Health

9
Hero Scientific

9
Heron Neutron Med…

9
Hemlock Semicondu… ◀

9

What this shows Hemlock holds 9 patents at rank #28,928, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hemlock

By rank, the assignees closest to #28,928 in granted patent volume.

Leaders in C01B (Non-metallic Elements)

Other assignees with the most granted patents in Hemlock's primary technology class.

Hemlock's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

30 33rd percentile higher than 33% of 49,997 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2018–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Hemlock Semiconductor Operations LLC patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	3	33.3%
2019	4	44.4%
2020	1	11.1%
2025partial year	1	11.1%

Which technologies does Hemlock Semiconductor Operations LLC patent most?

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 5

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 3

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 2

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 1

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 1

B24C - Abrasive OR Related Blasting With Particulate Material 1

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 1

C30B - Single-crystal Growth ; Unidirectional Solidification OF Eutectic Material OR Unidirectional Demixing OF Eutectoid MATERIAL; Refining BY Zone-melting OF Material ; Production OF A Homogeneous Polycrystalline Material With Defined Structure ; Single Crystals OR Homogeneous Polycrystalline Material WI 1

B07B - Separating Solids From Solids BY Sieving, Screening, Sifting OR BY Using GAS CURRENTS; Separating BY Other DRY Methods Applicable TO Bulk Material, e.g. Loose Articles FIT TO BE Handled Like Bulk Material 1

Y10T - Technical Subjects Covered BY Former US Classification 1

H05B - Electric HEATING; Electric Light Sources NOT Otherwise Provided FOR; Circuit Arrangements FOR Electric Light Sources, IN General 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

F28F - Details OF Heat-exchange AND Heat-transfer Apparatus, OF General Application 1

B65G - Transport OR Storage Devices, e.g. Conveyors FOR Loading OR Tipping, Shop Conveyor Systems OR Pneumatic Tube Conveyors 1

B29D - Producing Particular Articles From Plastics OR From Substances IN A Plastic State 1

Top 15 of 16 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Hemlock Semiconductor Operations LLC's patent record in context - here's where to go next.

Hemlock Semiconductor Operations LLC's lead technology class is C01B (Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c), 55.6% of its portfolio - see every assignee active in that class. Explore C01B
Ranked #28,962 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hemlock Semiconductor Operations LLC against Heated Blades Holding Company, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 30.0/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled by PlainPatent , US Patent Intelligence Editorial Process · May 15, 2026

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.